With the current economy, gas prices are now skyrocketing! The price of gas used to be $3.70, and it is increasing at a rate of
1 answer:
You might be interested in
Answer:
There is a 28.57% probability that a randomly selected participant who died by the end of the study was a non-smoker.
Step-by-step explanation:
We have the following probabilities:
A 15% probability that a participant is classified as a heavy smoker.
A 25% probability that a participant is classified as a light smoker.
A 100% - 25% - 15% = 60% probability that a participant is classified as a non smoker.
A x% probability that a non smoker dies.
A 3x% probability that a light smoker dies.
A 5x% probability that a heavy smoker dies.
This can be formulated as the following problem:
What is the probability of B happening, knowing that A has happened.
It can be calculated by the following formula
Where P(B) is the probability of B happening, P(A/B) is the probability of A happening knowing that B happened and P(A) is the probability of A happening.
This problem is:
What is the probability of the participant being a non-smoker, given that he died?
P(B) is the probability that the participant is a non smoker. So
P(A/B) is the probability that the participant dies, given that he is a non smoker. So:
P(A) is the probability that the participant dies:
is the probability that a heavy smoker is selected and that he dies. So:
is the probability that a light smoker is selected and that he dies. So:
is the probability that a non-smoker is selected and that he dies. So:
The probability that a participant dies is:
The probability of the participant being a non-smoker, given that he died, is:
There is a 28.57% probability that a randomly selected participant who died by the end of the study was a non-smoker.
Hey there!
Linear functions have a continuous change.
Let's check these tables and see if we can tell linear functions from non-linear functions.
The first one is
- x values: -1, 0, 1, 2
- we add 1 each time
- y values: 8, 5, 2, -1
- we subtract 3 each time
Let's try the next one:
- x values: -1, 0, 1, 2
- we add 1 each time
- y values: 5, 10, 15, 20
- we add 5 each time
Let's try the third one:
- x values: -1, 0, 1, 2
- - we add 1 each time
- y values: 15, 18, 20, 21
- we add 3, then 2, then 1..
So this table doesn't represent a linear function.
Let's check the fourth one:
- x values: -1, 0, 1, 2
- we add 1 each time
- y values: 1, 2, 3, 4
- we add 1 each time
Thus, Option C is the right option.
Hope everything is clear.
Let me know if you have any questions!
Always remember: Knowledge is power!